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path: root/lib/Target/X86/X86Subtarget.cpp
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* Re-enable AVX detection on x64 platforms.Michael Kuperstein2013-05-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181313 91177308-0d34-0410-b5e6-96231b3b80d8
* Unbreaking the non-x86 build bots by protecting the AVX test code properly.Aaron Ballman2013-05-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180992 91177308-0d34-0410-b5e6-96231b3b80d8
* Correctly testing for AVX support in x86 based off code from Hosts.cpp.Aaron Ballman2013-05-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180991 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch adds the X86FixupLEAs pass, which will reduce instructionPreston Gurd2013-04-25
| | | | | | | | | | | latency for certain models of the Intel Atom family, by converting instructions into their equivalent LEA instructions, when it is both useful and possible to do so. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180573 91177308-0d34-0410-b5e6-96231b3b80d8
* Formatting.Eric Christopher2013-04-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178589 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support of RDSEED defined in AVX2 extensionMichael Liao2013-03-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178314 91177308-0d34-0410-b5e6-96231b3b80d8
* Add ADX CPUID detectionMichael Liao2013-03-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178299 91177308-0d34-0410-b5e6-96231b3b80d8
* For the current Atom processor, the fastest way to handle a callPreston Gurd2013-03-27
| | | | | | | | | | | | | | | indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178171 91177308-0d34-0410-b5e6-96231b3b80d8
* Add HLE target featureMichael Liao2013-03-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178082 91177308-0d34-0410-b5e6-96231b3b80d8
* Add PREFETCHW codegen supportMichael Liao2013-03-26
| | | | | | | | - Add 'PRFCHW' feature defined in AVX2 ISA extension git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178040 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r176166 because it broke one of the lit tests.Nadav Rotem2013-02-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176171 91177308-0d34-0410-b5e6-96231b3b80d8
* std::string to StringRef.Nadav Rotem2013-02-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176166 91177308-0d34-0410-b5e6-96231b3b80d8
* Reinitialize the ivars in the subtarget so that they can be reset with the ↵Bill Wendling2013-02-16
| | | | | | new features. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175336 91177308-0d34-0410-b5e6-96231b3b80d8
* Temporary revert of 175320.Bill Wendling2013-02-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175322 91177308-0d34-0410-b5e6-96231b3b80d8
* Reinitialize the ivars in the subtarget.Bill Wendling2013-02-15
| | | | | | | | When we're recalculating the feature set of the subtarget, we need to have the ivars in their initial state. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175320 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the 'target-features' and 'target-cpu' attributes to reset the subtarget ↵Bill Wendling2013-02-15
| | | | | | | | | | | features. If two functions require different features (e.g., `-mno-sse' vs. `-msse') then we want to honor that, especially during LTO. We can do that by resetting the subtarget's features depending upon the 'target-feature' attribute. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175314 91177308-0d34-0410-b5e6-96231b3b80d8
* added basic support for Intel ADX instructionsKay Tiong Khoo2013-02-14
| | | | | | -feature flag, instructions definitions, test cases git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175196 91177308-0d34-0410-b5e6-96231b3b80d8
* Restrict sin/cos optimization to 64-bit only for now. 32-bit is a bit messy ↵Evan Cheng2013-01-30
| | | | | | and less critical. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173987 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach SDISel to combine fsin / fcos into a fsincos node if the followingEvan Cheng2013-01-29
| | | | | | | | | | | | | | | | | | | conditions are met: 1. They share the same operand and are in the same BB. 2. Both outputs are used. 3. The target has a native instruction that maps to ISD::FSINCOS node or the target provides a sincos library call. Implemented the generic optimization in sdisel and enabled it for Mac OSX. Also added an additional optimization for x86_64 Mac OSX by using an alternative entry point __sincos_stret which returns the two results in xmm0 / xmm1. rdar://13087969 PR13204 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173755 91177308-0d34-0410-b5e6-96231b3b80d8
* Pad Short Functions for Intel AtomPreston Gurd2013-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | The current Intel Atom microarchitecture has a feature whereby when a function returns early then it is slightly faster to execute a sequence of NOP instructions to wait until the return address is ready, as opposed to simply stalling on the ret instruction until the return address is ready. When compiling for X86 Atom only, this patch will run a pass, called "X86PadShortFunction" which will add NOP instructions where less than four cycles elapse between function entry and return. It includes tests. This patch has been updated to address Nadav's review comments - Optimize only at >= O1 and don't do optimization if -Os is set - Stores MachineBasicBlock* instead of BBNum - Uses DenseMap instead of std::map - Fixes placement of braces Patch by Andy Zhang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171879 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert revision 171524. Original message:Nadav Rotem2013-01-05
| | | | | | | | | | | | | | | | | | | | | | | URL: http://llvm.org/viewvc/llvm-project?rev=171524&view=rev Log: The current Intel Atom microarchitecture has a feature whereby when a function returns early then it is slightly faster to execute a sequence of NOP instructions to wait until the return address is ready, as opposed to simply stalling on the ret instruction until the return address is ready. When compiling for X86 Atom only, this patch will run a pass, called "X86PadShortFunction" which will add NOP instructions where less than four cycles elapse between function entry and return. It includes tests. Patch by Andy Zhang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171603 91177308-0d34-0410-b5e6-96231b3b80d8
* The current Intel Atom microarchitecture has a feature whereby when a functionPreston Gurd2013-01-04
| | | | | | | | | | | | | | | | | | | returns early then it is slightly faster to execute a sequence of NOP instructions to wait until the return address is ready, as opposed to simply stalling on the ret instruction until the return address is ready. When compiling for X86 Atom only, this patch will run a pass, called "X86PadShortFunction" which will add NOP instructions where less than four cycles elapse between function entry and return. It includes tests. Patch by Andy Zhang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171524 91177308-0d34-0410-b5e6-96231b3b80d8
* Move all of the header files which are involved in modelling the LLVM IRChandler Carruth2013-01-02
| | | | | | | | | | | | | | | | | | | | | into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a typo in my previous commit -- bloomfield is 0x1A not 0x2A.Chandler Carruth2012-12-10
| | | | | | | Thanks to the PaX folks for noticing in review! We need some tests here, any sugestions welcome... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169739 91177308-0d34-0410-b5e6-96231b3b80d8
* Address a FIXME and update the fast unaligned memory feature for newerChandler Carruth2012-12-10
| | | | | | | | | | | | | | | Intel chips. The model number rules were determined by inspecting Intel's documentation for their newer chip model numbers. My understanding is that all of the newer Intel chips have fast unaligned memory access, but if anyone is concerned about a particular chip, just shout. No tests updated; it's not clear we have dedicated tests for the chips' various features, but if anyone would like tests (or can point me at some existing ones), I'm happy to oblige. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169730 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the new script to sort the includes of every file under lib.Chandler Carruth2012-12-03
| | | | | | | | | | | | | | | | | Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch FreeBSD/i386 back to 4byte stack alignment. This partiallyRoman Divacky2012-11-09
| | | | | | | reverts r126226. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167632 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support of RTM from TSX extensionMichael Liao2012-11-08
| | | | | | | | | | - Add RTM code generation support throught 3 X86 intrinsics: xbegin()/xend() to start/end a transaction region, and xabort() to abort a tranaction region git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167573 91177308-0d34-0410-b5e6-96231b3b80d8
* misched: remove the unused getSpecialAddressLatency hook.Andrew Trick2012-10-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165418 91177308-0d34-0410-b5e6-96231b3b80d8
* Set up MCSchedModel after detecting the CPU type in X86SubTarget.Preston Gurd2012-10-03
| | | | | | | | | | | Corrects a problem whereby MCSchedModel was not being set up when the CPU type was auto-detected. Patch by Andy Zhang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165122 91177308-0d34-0410-b5e6-96231b3b80d8
* Generic Bypass Slow DivPreston Gurd2012-09-04
| | | | | | | | | | | | | | | | | | | | | | | | | - CodeGenPrepare pass for identifying div/rem ops - Backend specifies the type mapping using addBypassSlowDivType - Enabled only for Intel Atom with O2 32-bit -> 8-bit - Replace IDIV with instructions which test its value and use DIVB if the value is positive and less than 256. - In the case when the quotient and remainder of a divide are used a DIV and a REM instruction will be present in the IR. In the non-Atom case they are both lowered to IDIVs and CSE removes the redundant IDIV instruction, using the quotient and remainder from the first IDIV. However, due to this optimization CSE is not able to eliminate redundant IDIV instructions because they are located in different basic blocks. This is overcome by calculating both the quotient (DIV) and remainder (REM) in each basic block that is inserted by the optimization and reusing the result values when a subsequent DIV or REM instruction uses the same operands. - Test cases check for the presents of the optimization when calculating either the quotient, remainder, or both. Patch by Tyler Nowicki! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163150 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: when auto-detecting the subtarget features, make sure use IsIntel to detectManman Ren2012-08-13
| | | | | | | Nehalem, Westmere and Sandy Bridge. AMD also has processor family 6. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161763 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: when we are auto-detecting the subtarget features, make sure we turn onManman Ren2012-08-10
| | | | | | | | | | | | FeatureFastUAMem for Nehalem, Westmere and Sandy Bridge. FeatureFastUAMem is already on if we pass in nehalem or westmere as a command argument. rdar: 7252306 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161717 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow x86 subtargets to use the GenericModel defined in X86Schedule.td.Andrew Trick2012-08-07
| | | | | | | | | | | This allows codegen passes to query properties like InstrItins->SchedModel->IssueWidth. It also ensure's that computeOperandLatency returns the X86 defaults for loads and "high latency ops". This should have no significant impact on existing schedulers because X86 defaults happen to be the same as global defaults. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161370 91177308-0d34-0410-b5e6-96231b3b80d8
* Whitespace.Chad Rosier2012-08-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161122 91177308-0d34-0410-b5e6-96231b3b80d8
* Adds the family codes for the Midview Atom processors so that thePreston Gurd2012-07-19
| | | | | | | | Atom buildbot will auto-detect Atom. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160521 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch fixes 8 out of 20 unexpected failures in "make check"Preston Gurd2012-07-18
| | | | | | | | | | | | | | | | | when run on an Intel Atom processor. The failures have arisen due to changes elsewhere in the trunk over the past 8 weeks or so. These failures were not detected by the Atom buildbot because the CPU on the Atom buildbot was not being detected as an Atom CPU. The fix for this problem is in Host.cpp and X86Subtarget.cpp, but shall remain commented out until the current set of Atom test failures are fixed. Patch by Andy Zhang and Tyler Nowicki! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160451 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename FMA3 feature flag to just FMA to match gcc so it can be added to clang.Craig Topper2012-06-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157903 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable automatic detection of FMA3 support to allow intrinsics to be used.Craig Topper2012-06-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157805 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: Rename the CLMUL target feature to PCLMUL.Benjamin Kramer2012-05-31
| | | | | | | It was renamed in gcc/gas a while ago and causes all kinds of confusion because it was named differently in llvm and clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157745 91177308-0d34-0410-b5e6-96231b3b80d8
* Added FMA3 Intel instructions.Elena Demikhovsky2012-05-31
| | | | | | | | | | I disabled FMA3 autodetection, since the result may differ from expected for some benchmarks. I added tests for GodeGen and intrinsics. I did not change llvm.fma.f32/64 - it may be done later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157737 91177308-0d34-0410-b5e6-96231b3b80d8
* Change the Intel Atom detection code to recognizePreston Gurd2012-05-02
| | | | | | | | Lincroft and Medfield. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156025 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow BMI, AES, F16C, POPCNT, FMA3, and CLMUL to be detected on AMD processors.Craig Topper2012-05-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155899 91177308-0d34-0410-b5e6-96231b3b80d8
* Trivial change to set UseLeaForSP flag in addition to togglingPreston Gurd2012-04-26
| | | | | | | | | | the FeatureLeaForSP feature bit when llvm auto detects Intel Atom. Patch by Andy Zhang git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155655 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable detection of AVX and AVX2 support through CPUID. Add AVX/AVX2 to ↵Craig Topper2012-04-26
| | | | | | corei7-avx, core-avx-i, and core-avx2 cpu names. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155618 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch fixes a problem which arose when using the Post-RA schedulerPreston Gurd2012-04-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | on X86 Atom. Some of our tests failed because the tail merging part of the BranchFolding pass was creating new basic blocks which did not contain live-in information. When the anti-dependency code in the Post-RA scheduler ran, it would sometimes rename the register containing the function return value because the fact that the return value was live-in to the subsequent block had been lost. To fix this, it is necessary to run the RegisterScavenging code in the BranchFolding pass. This patch makes sure that the register scavenging code is invoked in the X86 subtarget only when post-RA scheduling is being done. Post RA scheduling in the X86 subtarget is only done for Atom. This patch adds a new function to the TargetRegisterClass to control whether or not live-ins should be preserved during branch folding. This is necessary in order for the anti-dependency optimizations done during the PostRASchedulerList pass to work properly when doing Post-RA scheduling for the X86 in general and for the Intel Atom in particular. The patch adds and invokes the new function trackLivenessAfterRegAlloc() instead of using the existing requiresRegisterScavenging(). It changes BranchFolding.cpp to call trackLivenessAfterRegAlloc() instead of requiresRegisterScavenging(). It changes the all the targets that implemented requiresRegisterScavenging() to also implement trackLivenessAfterRegAlloc(). It adds an assertion in the Post RA scheduler to make sure that post RA liveness information is available when it is needed. It changes the X86 break-anti-dependencies test to use –mcpu=atom, in order to avoid running into the added assertion. Finally, this patch restores the use of anti-dependency checking (which was turned off temporarily for the 3.1 release) for Intel Atom in the Post RA scheduler. Patch by Andy Zhang! Thanks to Jakob and Anton for their reviews. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155395 91177308-0d34-0410-b5e6-96231b3b80d8
* Temporarily turn off anti-dependency checkingPreston Gurd2012-04-16
| | | | | | | | | | during Post RA scheduling in X86, until the X86 target is changed to properly set up post RA liveness. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154874 91177308-0d34-0410-b5e6-96231b3b80d8
* Prune some includesCraig Topper2012-03-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153502 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove extra semi-colons.Chad Rosier2012-02-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151169 91177308-0d34-0410-b5e6-96231b3b80d8
* Use LEA to adjust stack ptr for Atom. Patch by Andy Zhang.Evan Cheng2012-02-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150008 91177308-0d34-0410-b5e6-96231b3b80d8
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